Question

the speed of the train is 72km per hour.Find it's speed in metre per second​

Answer 1

Answer:

20m/s

Step-by-step explanation:

1km=1000m

1hour=3600

then,

72km= 72000m

1hr=3600sec

hence,

72000m/3600sec

=720m/36sec

=20m/sec

Answer 2

Answer:

20 metre per second

Step-by-step explanation:

simply multiply by 5/18